11520515542552 has 64 divisors (see below), whose sum is σ = 23311488441600. Its totient is φ = 5319118804480.

The previous prime is 11520515542537. The next prime is 11520515542597. The reversal of 11520515542552 is 25524551502511.

It is a junction number, because it is equal to n+sod(n) for n = 11520515542499 and 11520515542508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19962777 + ... + 20531767.

It is an arithmetic number, because the mean of its divisors is an integer number (364242006900).

Almost surely, 2^{11520515542552} is an apocalyptic number.

It is an amenable number.

11520515542552 is an abundant number, since it is smaller than the sum of its proper divisors (11790972899048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11520515542552 is an frugal number, since it uses more digits than its factorization.

11520515542552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569173 (or 569063 counting only the distinct ones).

The product of its (nonzero) digits is 500000, while the sum is 43.

The spelling of 11520515542552 in words is "eleven trillion, five hundred twenty billion, five hundred fifteen million, five hundred forty-two thousand, five hundred fifty-two".